2550 has 24 divisors (see below), whose sum is σ = 6696. Its totient is φ = 640.
The previous prime is 2549. The next prime is 2551. The reversal of 2550 is 552.
2550 is nontrivially palindromic in base 4 and base 9.
2550 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.
It is an interprime number because it is at equal distance from previous prime (2549) and next prime (2551).
It is an Ulam number.
2550 is an undulating number in base 13.
It is a Curzon number.
It is a nialpdrome in base 15.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2551) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142 + ... + 158.
It is an arithmetic number, because the mean of its divisors is an integer number (279).
22550 is an apocalyptic number.
It is a pronic number, being equal to 50×51.
It is a practical number, because each smaller number is the sum of distinct divisors of 2550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3348).
2550 is an abundant number, since it is smaller than the sum of its proper divisors (4146).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2550 is a wasteful number, since it uses less digits than its factorization.
2550 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 32 (or 27 counting only the distinct ones).
The product of its (nonzero) digits is 50, while the sum is 12.
The square root of 2550 is about 50.4975246918. The cubic root of 2550 is about 13.6619720805.
Subtracting from 2550 its product of nonzero digits (50), we obtain a square (2500 = 502).
The spelling of 2550 in words is "two thousand, five hundred fifty".
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